<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>*选择所有的标签</title>
    <style>
        * {
             color: pink;
        }

    </style>
</head>
<body>
    <div>1</div>
    <ul>
        <li>3</li>
        <li>2</li>
    </ul>
    <h3>7</h3>
    
</body>
</html>